The radiation our eyes are most sensitive to lies in the color:

_________ is the only planet with a mean density less than water.

In the Kelvin scale, absolute zero lies at

Observations in the x-ray portion of the spectrum are not usually done from the surface of the earth.

Find the domain of the function:   Choose your answer below and be sure to show all of your work on your paper.

Changing the electric field will affect the magnetic field of a body.

Find the difference quotient for

The Sun’s blackbody curve peaks in the __________ portion of the spectrum.

All the planets revolve around the Sun in the same direction.

Find the limit. Note that an answer of DNE is not sufficient: If the limit does not exist, you must explain why, either by showing how the one-sided limits differ or by stating that the overall limit is